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Hereditary Hypotrichosis Simplex of the Scalp


María Rodríguez Vázquez M.D. C/Collado Ventoso no. 2, apto 346, 28230 Las Rozas, Madrid, Spain, or e-mail:


Hereditary hypotrichosis simplex of the scalp is a genotrichosis characterized by sparse or absent scalp hair without structural defects, in the absence of other ectodermal or systemic abnormalities. We describe two Spanish families with hypotrichosis of the scalp. We believe these families have Toribio and Quiñones type hereditary hypotrichosis simplex of the scalp.